Problem Statement. In accordance with WHO guidelines, the air quality in Pakistan is considered unsafe.
Q: Give the Indian Air Quality Standards (SPM, SO2, NOx, CO) for Residential, Industrial and Sensitive…
A: Air quality also called Ambient air quality, is the quality and condition of air in residential,…
Q: O When a pe
A: the time lag between exposure to hazardousmaterials and development of disease
Q: particles, (ii) a biological process for removal of dissolved organic matter and fine suspended…
A: the waste-water treatment process consists of various processes such as screening grit removal…
Q: You should perform disinfection in a water treatment plant in order to reduce pathogens to an…
A:
Q: What is the oxygen content as defined by the Confined Space Regulation that is considered to be…
A: Answer - Option c The space is oxygen-deficient if the oxygen concentration falls below the…
Q: Sanitary Engineering Potential of Hydrogen (pH) same question please help me: 3. Why is it…
A: The pH value of water indicates the logarithm of reciprocal of hydrogen ion concentration present in…
Q: Suggest some alternative form of transportation which improve the air quality. Describe briefly how…
A: There can be many alternatives to the conventional fossil fuel based transportation which improves…
Q: How many hazardous air pollutants were identified in the CAAA of 1990?
A: The hazardous air pollutants are very harmful to human lives and the environment. it causes…
Q: Define the constituents of wastewater and its relation to the contaminants, impurities and…
A:
Q: Your organization has been hired to provide a water treatment process or device to remove toxic…
A: Answer To calculate the concentration of CR(VI) in wastewater we can use the dilution and…
Q: Propose an air pollution control device for an automobile factory that emits nitrogen oxides, carbon…
A: In general, every industry must have an air pollution control device. Air pollutants are generated…
Q: good filtration system is important for removal of pathogens using chlorine.
A: In the question it has been said that in a filtration system why we need to use chlorine for killing…
Q: The Philippine Toxic and Hazardous Wastes Act places limits on the quantities of toxic substances…
A: Molar mass of chromium, Cr =52 Potassium, K=39.1 Oxygen, O=16
Q: Waste contents are equally distributed everywhere in ( PER CSTR
A: Explanation : The Plug Flow Reactor (PFR) and the Continuously Stirred Tank Reactor (CSTR) are both…
Q: Which of the following factors will increase the effectiveness of disinfectant? 1. Temperature 2.…
A: Disinfectant- Any drug or method that kills germs, including viruses, bacteria, and other microbes…
Q: The SO2 level of one section of a state is much below the national air quality standard. A large…
A: Given that :-In a particular section of a state SO2 level is much below as per national air quality…
Q: A baghouse that employs a shaker collection method is being designed to remove sawdust particles…
A:
Q: What is the principal health effect of radon as indoor pollutant?
A: There are various factors in the indoor environment that can affect well-being and health. The main…
Q: The primary air quality standard for NOx expressed as NO2 as an annual average is 100…
A: The annual average of NO2 = Temperature, T = To determine the equivalent concentration in ppm.
Q: (b) Fat, oil and grease from restaurants have been identified as a significant blockage in the…
A:
Q: Explain the linkage between: (a) open burning of garbage waste and air pollution. (b) transportation…
A: Question is from environmental engineering Two question are given and in second question there are…
Q: Provide certain control measures that can be adopted to reduce the air pollutants emitted by…
A: Avoid using vehicle for shorter distances. Adopting public transport instead of personal vehicles.…
Q: List the factors which should be considered while selecting the design of a gaseous contaminant…
A: Solution: Factors that we have to consider while selecting the design of a gaseous contaminant…
Q: Highlight different produced pollutants produced from laboratories, offices, ward and other areas of…
A: There different types of pollutants produces from laboratories, office, ward and the office wards…
Q: Describe the satety precautions for 1 ton liguid chlorine containers (i) in manutacturing to prevent…
A: (1) safety precautions for 1 ton liquid chlorine containers in manufacturing :- Liquid chlorine…
Q: A thorough description of the different AOP techniques available for wastewater treatment, including…
A:
Q: disinfection. What should the sodium hypochlorite pump be set at?
A:
Q: What is the purpose of having an aeration tank water waste water treatment plants? Describe what…
A: Que:- What is the purpose of having an aeration tank water wastewater treatment plants? Describe…
Q: What is the risk for a child drinking water contaminated with 0.061 mg/L carbon tetrachloride for 5…
A: Water contamination Although safe drinking water is critical to human existence, many of our water…
Q: 3. Problem 5-18 (modified), Davis and Cornwell, Introduction to Environmental Engineering, 6th Ed.:…
A:
Q: Please explain the ambient air quality policy iin the State of Indiana. Write a response that…
A: We need to explain the ambient air quality policy iin the State of Indiana and why other regions or…
Q: A well insulated room with a refrigerator running and door open, the air tem-perature in the room…
A:
Q: How many gallons of 12-percent sodium hypochlorite solution are needed to disinfect a reservoir 20…
A: Given data: Hypochlorite strength = 12% Diameter of the reservoir D=20 ft Depth of the reservoir h=6…
Q: treatment plant with an average flow of 2.5 m³/s treats its water with alum (Al2(SO4)3 18H2O) at a…
A: Alum dose = 20 mg/LInitial organic matter concentration =Final organic matter concentration = 6…
Q: Particulate removal on a certain gas stream must be 98.5% efficient to meet standards. If a…
A: Solution; Given that; η0=0.985ηcyclone=0.60
Q: Drain, Waste, and Vent System 1. Safety and contamination prevention 2. Testing procedure for DWV…
A: Contamination can be highly dangerous in plumbing system. Although, it can be avoided effectively by…
Q: Sanitary Engineering Potential of Hydrogen (pH) same question please help me: 1. Discuss the…
A: To define: Discuss the relationship between (a) pH and hydrogen ion concentration (b) pH and…
Q: The local population is worried about their exposure to SO2 from Factory A mentioned in the previous…
A: As we all know that the concentration of impurities decrease as it moves in the atmosphere due to…
Q: Samples of emissions from three suppliers are classi- fied for conformance to air-quality…
A: Given:- number of total samples=100 A=sample from supplier 1 B=sample from specifications To find:-…
Q: A local plant has a pancake type disinfection tank. Diameter is 15 m and height is 6 m. Flow of…
A:
Q: What are the sources of biological contaminants in indoor pollution?
A: Biological contaminants are living or dead organisms. It degrades the indoor air quality and can…
Q: Which factors affect amount of air pollution produced from motor vehicles?
A: There are different types of pollutants produced from the motor vehicles that are given as.…
Q: 2. a) A Co-60 source gives a dose rate of 400 μSv/hr at 1 m. At what distance from the source must a…
A:
Step by step
Solved in 2 steps with 2 images
- CVE 360 - Environmental Engineering Homework 2 AIUS AMERICA INTERNATIONA UNIVERSIT Problem 1 A wastewater treatment plant is required to disinfect its effluent before releasing treated wastewater into a neighboring stream. An inflow concentration of a certain infectious germ in the wastewater is 25,000 mg/L. A concentration of 2,000 mg/L is the highest concentration that can be released. It is suggested that the disinfection process employ a pipe that carries the effluent. The length of the pipe is 1000 m and the reaction rate constant is 0.1 min¹. Assume that the pipe behaves as a steady-state plug-flow system. Determine a) The residence time of this system (min) b) The speed of flow in this system (m/min) c) If the pipe has a diameter of 250 mm, determine the flow rate in the pipe (m³/hr) Cin 25000 mg/L L = 1000 m pipe = Cout 2000 mg/L k = 0.1 min 1What are criteria and non-criteria pollutants? What do you understand from a term Micro Indoor Air Pollution? (b) Define these three terms. i. Hearing Impairment ii. Speech interference level iii. LN and Leq conceptThe groundwater of an area was contaminated with organochlorine compounds, mainly TCE (trichlorethylene) and PCE (tetrachlorethylene). Describe a form of groundwater remediation.
- Describe the satety precautions for 1 ton liguid chlorine containers (i) in manutacturing to prevent explosions; and (ii) in handling for use at the water treatment plant.Please answer with steps.A local plant has a pancake type disinfection tank. Diameter is 15 m and height is 6 m. Flow of filtered water is 43 m3/min. To meet EPA regulation, plant should achieve 3 log inactivation of Giardia Cyst at pH 8 and 20 degree Celsius. Currently plant uses chlorine as primary disinfectant. (*Answers in whole number, No unit) Contact time? min CT value? mg-min/L Disinfectant concentration? mg/L
- Problem 5An analysis of the gas in an underground utility vault revealed 30 mg/m3 of hydrogen sulfide, which a workcrew discovered before entering the vault to perform repairs. Due to the permissible exposure limitationof 14 mg/m3, the work team started using a blower to ventilate the vault (cellar). Suppose the vault has a200 m³ capacity and the predicted duration of detention is 15 minutes. determinea) The flow rate of contaminant-free air in (m3/s) to lower the hydrogen sulfide level to a level thatwill allow the work crew to enter the vault?b) How long will it take to lower the hydrogen sulfide level to a level that will allow the work crew toenter?Assume the system behaves as a CSTR and that hydrogen sulfide is nonreactive in the time considered.Note: This is a case of flushing a nonreactive contaminant from a CSTR.List the factors which should be considered while selecting the design of a gaseous contaminant control system.Provide certain control measures that can be adopted to reduce the air pollutants emitted by automobiles (c)